Oven mitt



FIG. 1 is a front view of an oven mitt, according to my new design;

FIG. 2 is a back view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The dash dot lines depict portions of the oven mitt that form no part of the claimed design. 

CLAIM The ornamental design for an oven mitt, as shown and described. 